Bosch D263 Conventional 2-Wire Smoke Detector

The Bosch D263 is a two-wire photoelectric smoke detector designed for compatible conventional fire alarm initiating circuits, using an IR light source and photodiode chamber to detect smoke from common combustibles while helping reduce nuisance alarms with an insect and dust screen. It includes status LEDs, a removable terminal block for faster wiring, and built-in test points for sensitivity verification. Key Specifications: Type: Two-wire photoelectric smoke detector Core Function(s): Detects smoke via infrared optical chamber and signals an alarm condition to the control panel Loop/Protocol: Conventional two-wire IDC (control panel compatibility required) Power: 8.5 to 33 VDC (standby range); 22 sec max power-up; 0.080 mA standby at 12 V (0.1 mA max) Indicators/UI: Red LED status indication (normal calibration flash about every 3.5 sec); removable terminal block accepts up to 12 AWG Compatible Accessories: D1005 – Test cable for voltmeter sensitivity verification DT-2 – Detector removal tool TP280 – Trim plate (retrofit and remodeling) D132B – Reversing relay module (used to activate compatible sounder functions in the series)